Results 21 to 30 of about 48,565 (249)

An X-ray diffraction method for determining the amount of xenotime in a zircon sample [PDF]

open access: yesBulletin of the Geological Society of Finland, 1984
An X-ray method was developed for determining the amount of xenotime or zircon in a zircon ‒ xenotime sample. Such analyses are useful in establishing whether a solid solution exists between xenotime and zircon or whether there is a separate xenotime ...
R. Törnroos
doaj   +1 more source

Discovery of mafic impact melt in the center of the Vredefort dome:archetype for continental residua of early Earth cratering? [PDF]

open access: yes, 2014
Melting by impact heating is thought to have been a significant process in the modification of early planetary crusts; however, crustally derived melt bodies in ancient terrestrial crust are frequently presumed to be absent due to erosion.
Barker, I. R.   +6 more
core   +1 more source

Electrostatic force: A novel method for mounting small zircon grains to expose the maximum outer surface

open access: yesSolid Earth Sciences, 2020
Mirco-beam isotopic analyses of zircon have increased dramatically with applications for providing multi-isotopic information. As small as 2–5 μm spot size could be used by secondary ion mass spectrometry for in-situ isotope analysis of zircon with high ...
Xiao-Xiao Ling   +3 more
doaj   +1 more source

U–Pb zircon ages of the host rocks of the Juomasuo Au–Co–Cu deposit, northeastern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2017
The Salittu Formation is one of the few metavolcanic successions in the U-Pb zircon single grain dating using the LA-MC-ICP-MS technique was utilized to determine the age of the host rocks of the Juomasuo Au-Co-Cu deposit located in the late Archean ...
P. Nikkola, I. Mänttäri, O.T. Rämö
doaj   +1 more source

Post-Variscan thermal evolution of the flanks of the southern Upper Rhine Graben : fission-track analyses and thermal modelling [PDF]

open access: yes, 2006
The Upper Rhine Graben (URG) is the most discernible part of the European Cenozoic rift system. Uplifted Variscan basement is exposed in the Black Forest and the Vosges and forms the flanks of the southern URG.
Timar-Geng, Zoltan
core   +1 more source

Luminescence spectroscopy of natural and synthetic REE-bearing minerals [PDF]

open access: yes, 2009
This study investigates the photoluminescence (PL), cathodoluminescence (CL), radioluminescence (RL) and ionoluminescence (IL) of natural and synthetic minerals.
Friis, Henrik
core   +2 more sources

Influence of Growth Stimulants on Seed Germination and Seedlings Growth of Scots Pine (Pinus sylvestris L.)

open access: yesЛесной журнал, 2023
Scots pine (Pinus sylvestris L.) is a potential introduced plant that can be used for reforestation in the southern part of Primorsky Krai. This plant is valuable for water regulation and mountain strengthening. It is widely used in the national economy.
Valentina Yu. Ostroshenko   +1 more
doaj   +1 more source

Patterns of Late Cenozoic exhumation deduced from apatite and zircon U-He ages from Fiordland, New Zealand [PDF]

open access: yes, 2005
New apatite and zircon (U-Th)/He ages from the Fiordland region of New Zealand's South Island expand on earlier results and provide new constraints on patterns of Late Cenozoic exhumation and cooling across this region.
House, Martha A.   +7 more
core   +1 more source

Extensional faulting on Tinos island, Aegean sea, Greece: How many detachments? [PDF]

open access: yes, 2007
Zircon and apatite fission track (ZFT and AFT) and (U-Th)/He, 40Ar/39Ar hornblende, and U-Pb zircon ages from the granites of Tinos Island in the Aegean Sea, Greece, suggest, together with published ZFT data, that there are three extensional detachments ...
Maurice Brunel   +28 more
core   +1 more source

Timing of deposition, orogenesis and glaciation within the Dalradian rocks of Scotland: constraints from U-Pb zircon ages [PDF]

open access: yes, 2002
The stratigraphical and structural continuity of the Late Proterozoic Dalradian rocks of the Scottish Highlands is re-examined in the light of new U-Pb zircon ages on the tuffs belonging to the Tayvallich Volcanic Formation (601 ñ 4 Ma), and on the late ...
Redwood, S.D.   +7 more
core   +3 more sources

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